for·mi·da·ble/`fɔrmɪdəbḷ; ˈfɔːmɪdəbəl/ adj 1 a formidable person is powerful and slightly frightening 〔人〕令人畏惧的; 可怕的: a formidable opponent 可怕的对手 2 difficult and needing a lot of hard work, careful thought etc 困难的，艰巨的: We have to cut pollution by 50% — a formidable task. 我们必须把污染降低 50% — 非常棘手的任务。